长春岭地区扶余油层储层预测及含油气性评价

发布时间：2019-06-15 06:39

【摘要】：长春岭构造是吉林油田早期发现的含油气构造,构造形态为被断堑复杂化的长轴背斜;最大圈闭线为-200m;闭合高度160m;闭合面积约139.0k m2。并于20世纪初70年代开始进行勘探,发现了一批油气显示井,由于试油产量低,投产效果差,一直没有获得较大的突破,当时认为长春岭构造定型于明水组沉积末期,晚于油气运移主要时期,不会形成大的油气规模。21世纪初期,为了进一步评价本区地质和含油气状况,针对不同的区块相继部署了几口评价井,突破了本区的工业油流观,同时也发现了一些实际问题,如:同一构造单元储层特征不同、含油气情况不同;储层砂体在平面上呈条带状分布,纵向砂体叠加连片,砂岩稳定性差;前人利用叠后信息,预测成果差异很大,砂体预测成果与钻井吻合性差;长春岭地区砂泥岩速度差小,声波曲线不能较好地反映地下岩性特征等。本文针对该区存在的油藏整体开发不利的以上问题,利用三维地震资料对区域储层进行精细顶面构造解释,重新识别微断层;利用先进的绘图软件对储层进行科学合理的描述,对油藏类型及油气水分布规律进一步认识;同时开展相应重点储层的含油气预测,对进一步提高本区已开发区块评价效果和进一步部署新井,实现储层的整体利用具有重要的指导意义。
[Abstract]:Changchun Ling structure is an oil and gas bearing structure discovered in the early stage of Jilin Oilfield. The structural form is a long axis anticlinal complicated by fault cutting, the maximum trap line is-200m, the closing height is 160m, and the closed area is about 139.0km2. The exploration began in the early 1970s, and a number of oil and gas display wells were found. Due to the low production rate and poor production effect, no great breakthrough has been made. At that time, it was considered that Changchun Ridge structure was formed at the end of Mingshui formation deposition, later than the main period of oil and gas migration, and would not form a large oil and gas scale. In the early 21st century, in order to further evaluate the geology and oil and gas bearing conditions in this area, it is considered that Changchun Ridge structure will not form a large oil and gas scale later than the main period of oil and gas migration. According to different blocks, several evaluation wells have been deployed one after another, which has broken through the view of industrial oil flow in this area, and some practical problems have been found, such as: different reservoir characteristics and different oil and gas bearing conditions in the same structural unit; The reservoir sand bodies are banded on the plane, the longitudinal sand bodies are superimposed and connected, and the sandstone stability is poor. By using the post-stack information, the prediction results are very different, and the sand body prediction results are in poor agreement with drilling. The velocity difference of sand mudstone in Changchun Mountains area is small, and the acoustic curve can not reflect the underground lithology characteristics. In view of the above problems existing in the overall development of the reservoir in this area, this paper uses three-dimensional seismic data to interpret the fine top surface structure of the regional reservoir and re-identify the micro-fault, uses the advanced drawing software to describe the reservoir scientifically and reasonably, and further understands the reservoir type and the distribution law of oil, gas and water. At the same time, it is of great guiding significance to carry out the oil and gas prediction of the corresponding key reservoirs in order to further improve the evaluation effect of the developed area blocks and further deploy the new wells, and to realize the overall utilization of the reservoirs.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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